fix: Request logging broken in Electron (ipfs-inactive#808)

check whether res.req is set instead of relying on detect-node

Author: requilence

src/utils/send-request.js

@@ -37,7 +37,7 @@ function onRes (buffer, cb) {
     const isJson = res.headers['content-type'] &&
                    res.headers['content-type'].indexOf('application/json') === 0
 
-    if (isNode) {
+    if (res.req) {
       log(res.req.method, `${res.req.getHeaders().host}${res.req.path}`, res.statusCode, res.statusMessage)
     } else {
       log(res.url, res.statusCode, res.statusMessage)